A high-performance forming method for dry materials of continuous casting tundish

Abstract

The present invention relates to the technical field of continuous casting tundish metallurgy, and particularly to a method for forming a high-performance dry material for continuous casting tundish, which includes: crushing and grinding raw materials, and stirring and mixing them according to the formula ratio to obtain candidate raw materials; drying the candidate raw materials to obtain the particle size distribution of the dried candidate raw materials; determining the vibration parameters during the vibration process according to the particle size distribution, and performing vibration treatment; obtaining the bulk density and apparent porosity of the candidate raw materials after vibration, and determining whether the compactness of the candidate raw materials after vibration meets the preset standard; if the compactness of the candidate raw materials after vibration meets the preset standard, determining the baking control parameters for the baking process based on the bulk density and apparent porosity; performing baking treatment based on the determined baking control parameters, and performing cooling treatment after baking to obtain the formed dry material for tundish. The present invention can ensure the strength of the dry material for tundish and improve the forming efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous casting tundish metallurgy, and particularly to a forming method for high-performance dry mix for continuous casting tundishes. Background Art

[0002] The tundish is an intermediate storage for molten steel to flow from the ladle to the mold during the continuous casting production process of steelmaking, and is crucial for ensuring clean steelmaking and multi-hearth continuous casting. As an important refractory material for the working lining of tundishes in the iron and steel continuous casting industry, the dry mix for tundishes has an important impact on the preparation of high-performance and high-quality steel. The dry mix for tundishes has a relatively long service life, generally reaching more than 20 hours, and in some cases up to 60 - 70 hours. Therefore, the application of dry mix has been increasingly widespread in recent years. During the use of the tundish, it is continuously scoured by molten steel and impacted by steel slag, which will affect the service life of the dry mix for tundishes, thus affecting the progress of the continuous casting industry. Since the dry mix does not contain moisture and has sufficient strength after low-temperature baking, it can be used for casting with a cold tundish. In addition, it has the advantages of not contaminating molten steel, long service life, simple maintenance, and easy tundish turnover and cleaning.

[0003] For continuous casting production, improving the operation rate of the continuous caster means increasing production and efficiency. The high-efficiency continuous casting technology takes high casting speed as the core and the production of high-quality defect-free billets as the basis. However, in the actual production process, there are many factors restricting high-efficiency continuous casting production. The existing tundish refractories have poor quality, seriously pollute the quality of molten steel, and at the same time reduce the quality of steel billets. The service life of the tundish also severely restricts the number of consecutive casting heats, not only reducing the molten steel yield, but also reducing the number of consecutive casting heats of the continuous caster. The dry mix for tundishes adopts a construction process of vibration forming and baking curing. If the strength after baking is low, it will cause local collapse of the dry mix and the generation of large cracks, resulting in poor slag resistance and short service life of the dry mix for tundishes. How to improve the strength and erosion resistance of the dry mix for tundishes is an urgent technical problem to be solved in the current industry.

[0004] Chinese Patent Publication No. CN115417661B discloses a dry mix for tundishes, a working lining of a tundish and its preparation method. First, the refractory aggregate and lightweight filler are mixed once, then inorganic fiber, fine powder additive and inorganic binder are added for secondary mixing, then a surface modifier is added for tertiary mixing, and finally a dust inhibitor is added for quaternary mixing. After that, it is filled into a closed container for air extraction and storage to obtain the dry mix for tundishes. The dry mix for tundishes is poured between the permanent layer and the formwork of the tundish, vibration-compacted, and then heated and baked. After the formwork cools down, the formwork is pulled out to obtain the working lining of the tundish.

[0005] It can be seen that the above invention has the following problems: The vibration parameters and baking parameters during the forming process of the tundish dry mix are both fixed empirical values. However, the parameters of the tundish dry mix after each mixing may not be consistent, making it difficult to ensure the strength of the tundish dry mix, and the forming efficiency is relatively low. Summary of the Invention

[0006] To this end, the present invention provides a method for forming a high-performance continuous casting tundish dry mix to overcome the problems in the prior art that it is difficult to ensure the strength of the tundish dry mix and the forming efficiency is relatively low.

[0007] To achieve the above object, the present invention provides a method for forming a high-performance continuous casting tundish dry mix, including:

[0008] Step S1, crushing and grinding the raw materials, and stirring and mixing them according to the formula ratio to obtain candidate raw materials;

[0009] Step S2, drying the candidate raw materials, and obtaining the particle size distribution of the dried candidate raw materials;

[0010] Step S3, determining the vibration parameters during the vibration process according to the particle size distribution, and performing vibration treatment on the dried candidate raw materials based on the vibration parameters; the vibration parameters include vibration time and vibration frequency;

[0011] Step S4, obtaining the bulk density and apparent porosity of the candidate raw materials after vibration, and determining whether the compactness of the candidate raw materials after vibration meets the preset standard according to the bulk density and apparent porosity;

[0012] Step S5, if the compactness of the candidate raw materials after vibration meets the preset standard, determining the baking control parameters during the baking process based on the bulk density and the apparent porosity; the baking control parameters include heating rate, baking temperature, and baking time;

[0013] Step S6, performing baking treatment on the candidate raw materials based on the determined baking control parameters, and performing cooling treatment after baking to obtain the formed tundish dry mix.

[0014] Further, in the step S3, determining the vibration parameters during the vibration process includes:

[0015] Step S31, determining the particle size characteristic value according to the particle size distribution;

[0016] Step S32, comparing the particle size characteristic value with a preset particle size value, and determining the vibration parameters during the vibration process based on the comparison result.

[0017] Further, in the step S32, determining the vibration parameters during the vibration process further includes:

[0018] If the particle size characteristic value is greater than the preset particle size value, increase the preset vibration parameters to obtain the vibration parameters during the vibration process;

[0019] If the particle size characteristic value is less than or equal to the preset particle size value, decrease the preset vibration parameters to obtain the vibration parameters during the vibration process; wherein, the preset vibration parameters are the vibration parameters during the vibration process corresponding to the preset particle size value.

[0020] Further, in the step S32, determine the increase / decrease amplitude of the preset vibration parameters according to the difference between the particle size characteristic value and the preset particle size value.

[0021] Further, in the step S4, if the bulk density is greater than the preset bulk density and the apparent porosity is less than the preset apparent porosity, the densification degree of the candidate raw material after vibration meets the preset standard; otherwise, the densification degree of the candidate raw material after vibration does not meet the preset standard.

[0022] Further, after the step S4, it further includes:

[0023] Step S41, if the densification degree of the candidate raw material after vibration does not meet the preset standard, repeat the step S3 for vibration treatment.

[0024] Further, in the step S5, determine the baking control parameters for the baking process based on the bulk density and the apparent porosity, including:

[0025] Input the bulk density and the apparent porosity into the target neural network model to obtain the baking control parameters output by the target neural network model.

[0026] Further, in the step S5, determine the baking control parameters for the baking process based on the bulk density and the apparent porosity, including:

[0027] Step S51, determine the parameter adjustment ratio based on the bulk density and the apparent porosity;

[0028] Step S52, determine the baking control parameters for the baking process based on the parameter adjustment ratio and the preset baking control parameters.

[0029] Further, in the step S6, it includes:

[0030] Detect the demolding strength of the candidate raw material after baking, and determine whether the baking is completed based on the demolding strength.

[0031] Further, in the step S6, determine the cooling rate for the cooling process based on the baking control parameters.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows. By drying the candidate raw materials after crushing, grinding, and mixing, the present invention can remove moisture, avoid the expansion and cracking of the dry material in the intermediate ladle, thereby improving the strength and forming efficiency of the dry material in the intermediate ladle after forming. By determining the vibration parameters based on the particle size distribution after drying, not only can the particles in the dry material be rearranged to form a dense and uniform whole, thereby improving the strength of the dry material in the intermediate ladle, but also the vibration and forming efficiency can be improved. By determining whether the density of the candidate raw materials after vibration meets the preset standard, the uniformity and tightness of the dry material in the intermediate ladle can be further ensured. By determining the baking control parameters of the baking process based on the bulk density and apparent porosity after vibration, the baking process can be flexibly controlled according to the parameters after vibration, thereby improving the strength and forming efficiency of the dry material in the intermediate ladle, and prolonging the service life of the dry material in the intermediate ladle.

[0033] Furthermore, the present invention determines the particle size characteristic value according to the particle size distribution of the candidate raw materials after drying, and determines the vibration parameters during the vibration process according to the comparison result between the particle size characteristic value and the preset particle size characteristic value, which can not only improve the vibration accuracy and flexibility, but also improve the forming efficiency.

[0034] Furthermore, the present invention jointly determines whether the density of the candidate raw materials meets the preset standard according to the magnitude relationship between the bulk density and the preset bulk density and the magnitude relationship between the apparent porosity and the preset apparent porosity, which can improve the accuracy of the determination, thereby improving the subsequent forming quality and forming efficiency.

[0035] Furthermore, if it is determined that the density of the candidate raw materials after vibration does not meet the preset standard, the present invention repeats the step S3 for vibration treatment, which can improve the strength of the dry material in the intermediate ladle by increasing its density, thereby prolonging the service life of the dry material in the intermediate ladle.

[0036] Furthermore, the present invention determines whether the baking is completed based on the demoulding strength of the candidate raw materials after baking, which can improve the strength and forming efficiency of the dry material in the intermediate ladle.

[0037] Furthermore, the present invention determines the cooling rate of the cooling process based on the baking control parameters, which can avoid cracks caused by too rapid temperature changes, reduce thermal expansion and contraction caused by temperature changes, thereby improving the strength of the dry material in the intermediate ladle and prolonging the service life. Description of the Drawings

[0038] Figure 1 is a flowchart of the forming method for the high-performance continuous casting intermediate ladle dry material in the embodiment of the present invention;

[0039] Figure 2Schematic diagram of steps in determining the vibration process according to an embodiment of the present invention;

[0040] Figure 3 Logic judgment diagram in determining the vibration process according to an embodiment of the present invention;

[0041] Figure 4 Schematic diagram of steps for determining the baking control parameters in the baking process according to an embodiment of the present invention. Detailed implementation manners

[0042] In order to make the objectives and advantages of the present invention clearer, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] The preferred implementation manners of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0044] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0045] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] Please refer to Figure 1 as shown, which is a flowchart of a high-performance continuous casting tundish dry mix forming method according to an embodiment of the present invention; the present invention provides a high-performance continuous casting tundish dry mix forming method, including:

[0047] Step S1, crushing, grinding the raw materials, and stirring and mixing them according to the formula ratio to obtain candidate raw materials;

[0048] It can be understood that those skilled in the art know that any equipment and method capable of crushing, grinding, and stirring the raw materials of the tundish dry mix in the prior art fall within the protection scope of the present invention and will not be elaborated herein.

[0049] In implementation, the actual implementer can set the formula ratio according to the actual situation. For example: 20 parts to 35 parts of waste magnesium old bricks, 20 parts to 35 parts of calcined forsterite; 50 parts to 70 parts of sintered magnesia particles, 5 parts to 10 parts of metallic iron powder.

[0050] Step S2: Perform a drying treatment on the candidate raw materials and obtain the particle size distribution of the dried candidate raw materials.

[0051] It can be understood that by drying the candidate raw materials, moisture can be quickly removed, and during the drying process, some components in the candidate raw materials will gradually solidify. After drying, loose and uniform candidate raw materials are obtained, thereby improving the bonding strength of the candidate raw materials and the forming efficiency.

[0052] In implementation, the actual implementer can determine the drying parameters according to the actual situation or based on the grinding degree / the components and contents in the candidate raw materials. Preferably, the drying time is 1h to 2h, and the drying temperature is 800°C to 1000°C.

[0053] It should be noted that those skilled in the art know that any method in the prior art that can determine the particle size distribution of the dried candidate raw materials falls within the protection scope of the present invention and will not be elaborated here.

[0054] Step S3: Determine the vibration parameters during the vibration process according to the particle size distribution, and perform a vibration treatment on the dried candidate raw materials based on the vibration parameters; the vibration parameters include vibration time and vibration frequency.

[0055] Please refer to Figure 2 and Figure 3 as shown, Figure 2 is a schematic diagram of the steps for determining the vibration process in an embodiment of the present invention; Figure 3 is a logic judgment diagram for determining the vibration process in an embodiment of the present invention; specifically, in the step S3, determining the vibration parameters during the vibration process includes:

[0056] Step S31: Determine the particle size characteristic value according to the particle size distribution.

[0057] Step S32: Compare the particle size characteristic value with a preset particle size value, and determine the vibration parameters during the vibration process based on the comparison result.

[0058] In implementation, the particle size characteristic value is the particle size value corresponding to the cumulative distribution (percentage content of particles smaller than a certain particle size) in the dried candidate raw materials being greater than a first preset threshold. Preferably, the value range of the first preset threshold is set to 80% to 90%.

[0059] Specifically, in the step S32, determining the vibration parameters during the vibration process further includes:

[0060] If the particle size characteristic value is greater than the preset particle size value, increase the preset vibration parameters to obtain the vibration parameters during the vibration process;

[0061] If the particle size characteristic value is less than or equal to the preset particle size value, decrease the preset vibration parameters to obtain the vibration parameters during the vibration process; wherein, the preset vibration parameters are the vibration parameters during the vibration process corresponding to the preset particle size value.

[0062] Specifically, in the step S32, determine the increase / decrease amplitude of the preset vibration parameters according to the difference between the particle size characteristic value and the preset particle size value, wherein, the difference between the particle size characteristic value and the preset particle size value is positively correlated with the increase / decrease amplitude of the preset vibration parameters.

[0063] It can be understood that the actual implementers can set the preset particle size value according to the actual situation or based on the particle size distribution of the dried candidate raw materials corresponding to the intermediate dry materials passing the qualification test in the historical data. Preferably, the preset particle size value can be set to 4 / 5 to 9 / 10 of the average value of the maximum particle sizes of the dried candidate raw materials passing the qualification test in the historical data; the actual implementers can set the preset vibration parameters according to the actual situation or based on the average value of the vibration parameters during the vibration process corresponding to the preset particle size value of the intermediate dry materials passing the qualification test in the historical data. Preferably, the value range of the preset vibration time is set to 5 min to 10 min, and the value range of the preset vibration frequency is set to 50 Hz to 80 Hz.

[0064] In implementation, the adjustment ratio can be determined according to the ratio of the difference between the particle size characteristic value and the preset particle size value to the preset particle size value, and the increase / decrease amplitude of the preset vibration parameters can be determined according to the product of the adjustment ratio and each preset vibration parameter.

[0065] In a specific embodiment, the first preset threshold is 80%, the preset particle size value is 0.7 mm, the preset vibration time is set to 7 min, the preset vibration frequency is set to 63 Hz, the particle size distribution of the dried candidate raw materials is that the particle size below 0.5 mm is 70%, and the particle size below 0.8 mm is 85%. Then the particle size characteristic value is 0.8 mm. Since the particle size characteristic value (0.8 mm) is greater than the preset particle size value (0.7 mm), increase the preset vibration parameters to obtain the vibration parameters during the vibration process. The adjustment ratio is (0.8 - 0.7) / 0.7 = 1 / 7. Then the increase amplitude of the vibration time is (1 / 7)×7 = 1 min, and the increase amplitude of the vibration frequency is 63×(1 / 7) = 9 Hz. That is, the adjusted vibration time is 7 + 1 = 8 min, and the adjusted vibration frequency is 63 + 9 = 72 Hz.

[0066] It should be noted that those skilled in the art are aware that any equipment and method capable of vibrating the dried candidate raw materials in the prior art fall within the protection scope of the present invention, and will not be elaborated herein.

[0067] The present invention determines the particle size characteristic value according to the particle size distribution of the dried candidate raw materials, and determines the vibration parameters during the vibration process according to the comparison result between the particle size characteristic value and the preset particle size characteristic value, which can not only improve the vibration accuracy and flexibility, but also improve the molding efficiency.

[0068] Step S4: Obtain the bulk density and apparent porosity of the candidate raw materials after vibration, and determine whether the compactness of the candidate raw materials after vibration meets the preset standard according to the bulk density and apparent porosity;

[0069] Specifically, in the step S4, if the bulk density is greater than the preset bulk density and the apparent porosity is less than the preset apparent porosity, the compactness of the candidate raw materials after vibration meets the preset standard; otherwise, the compactness of the candidate raw materials after vibration does not meet the preset standard.

[0070] It should be noted that the bulk density refers to the ratio of the mass of the candidate raw materials after vibration to their total volume, and the apparent porosity is the ratio of the volume of all open pores in the candidate raw materials after vibration to their total volume. Those skilled in the art are aware that any method and equipment capable of measuring the bulk density and apparent porosity of the candidate raw materials after vibration fall within the protection scope of the present invention, and will not be elaborated herein.

[0071] It can be understood that the actual implementer can set the preset bulk density and preset apparent porosity according to the actual situation or based on the average values of the bulk density and apparent porosity of the candidate raw materials after vibration corresponding to the intermediate dry ladle materials that have passed the qualification test in historical data. Preferably, the value range of the preset bulk density is set to 1.8 g / cm 3 ~2.5 g / cm 3 , and the value range of the preset apparent porosity is set to 40% - 50%.

[0072] The present invention jointly determines whether the compactness of the candidate raw materials meets the preset standard according to the magnitude relationship between the bulk density and the preset bulk density and the magnitude relationship between the apparent porosity and the preset apparent porosity, which can improve the accuracy of the determination, thereby improving the subsequent molding quality and molding efficiency.

[0073] Specifically, in the step S4, it further includes:

[0074] Step S41: If the compactness of the candidate raw materials after vibration does not meet the preset standard, repeat the step S3 for vibration treatment.

[0075] In implementation, if the bulk density is less than or equal to the preset bulk density, or the apparent porosity is greater than or equal to the preset apparent porosity, then the densification degree of the candidate raw material after vibration does not meet the preset standard, and the candidate raw material is vibrated again according to step S3 until the densification degree of the candidate raw material after vibration meets the preset standard.

[0076] In the present invention, by determining that the densification degree of the candidate raw material after vibration does not meet the preset standard and repeating step S3 for vibration treatment, the strength of the tundish dry mix can be improved by increasing its densification degree, thereby extending the service life of the tundish dry mix.

[0077] Step S5, if the densification degree of the candidate raw material after vibration meets the preset standard, then determine the baking control parameters for the baking process based on the bulk density and the apparent porosity; the baking control parameters include the heating rate, the baking temperature, and the baking time;

[0078] Specifically, in a specific embodiment, in step S5, determining the baking control parameters for the baking process based on the bulk density and the apparent porosity includes:

[0079] Input the bulk density and the apparent porosity into the target neural network model to obtain the baking control parameters output by the target neural network model.

[0080] In implementation, training samples are generated according to the bulk density and the apparent porosity corresponding to each tundish dry mix that has passed the qualification test in the historical data, sample labels corresponding to each training sample are generated according to the corresponding baking control parameters, and the initial neural network model is trained according to the training samples and the corresponding sample labels to obtain the target neural network model. It should be noted that those skilled in the art know that any neural network model in the prior art that can obtain the baking control parameters through training falls within the protection scope of the present invention and will not be elaborated herein.

[0081] Please refer to Figure 4 as shown, which is a schematic diagram of the steps for determining the baking control parameters in the embodiment of the present invention; specifically, in another specific embodiment, in step S5, determining the baking control parameters for the baking process based on the bulk density and the apparent porosity includes:

[0082] Step S51, determine the parameter adjustment ratio based on the bulk density and the apparent porosity;

[0083] Step S52, determine the baking control parameters for the baking process based on the parameter adjustment ratio and the preset baking control parameters.

[0084] In implementation, a first comparison value is determined according to the ratio of the bulk density to the preset bulk density, a second comparison value is determined according to the ratio of the apparent porosity to the preset apparent porosity, and a parameter adjustment ratio is determined according to the product of the first comparison value and the second comparison value.

[0085] It can be understood that actual implementers can set the preset baking control parameters according to the actual situation or based on the average values of the respective baking control parameters corresponding to the tundish dry materials that passed the qualification test in historical data. Preferably, the value range of the preset heating rate is set to 800 °C / h to 1000 °C / h, the value range of the preset baking temperature is set to 1000 °C to 1300 °C, and the value range of the preset baking time is set to 2 h to 4 h.

[0086] Each baking control parameter in the baking process is determined according to the product of the parameter adjustment ratio and each preset baking parameter. For example, the preset heating rate is 900 °C / h, the preset baking temperature is 1200 °C, the preset baking time is 3 h, the ratio of the bulk density to the preset bulk density is 1.2, and the ratio of the apparent porosity to the preset apparent porosity is 0.8. Then the parameter adjustment ratio is 1.2 × 0.8 = 0.96. Then the heating rate in the baking process is 0.96 × 900 = 864 °C / h, the baking temperature in the baking process is 0.96 × 1200 = 1152 °C, and the baking time in the baking process is 0.96 × 3 = 2.88 h.

[0087] Step S6: Bake the candidate raw material based on the determined baking control parameters, and perform a cooling treatment after baking to obtain the formed tundish dry material.

[0088] Specifically, in the step S6, it includes:

[0089] Detect the demolding strength of the candidate raw material after baking, and determine whether the baking is completed based on the demolding strength.

[0090] It should be noted that those skilled in the art know that any equipment and method in the prior art that can detect the demolding strength of the candidate raw material after baking fall within the protection scope of the present invention and will not be elaborated here.

[0091] In implementation, if the demolding strength of the candidate raw material after baking is greater than the preset demolding strength, it is determined that the baking is completed.

[0092] It is understandable that the demolding strength refers to the ability of the material to withstand the maximum external force without cracking or deforming before or after being taken out of the mold during the molding process. If the demolding strength is insufficient, it will cause cracks, breakage or deformation of the tundish dry mix during the demolding process, affecting the molding quality. The actual implementers can set the preset demolding strength according to the actual situation or based on the average value of the demolding strength corresponding to the tundish dry mix that has passed the qualification test in historical data. Preferably, the value range of the preset demolding strength is set to 8 MPa to 10 MPa.

[0093] The present invention determines whether the baking is completed based on the demolding strength of the candidate raw materials after baking, which can improve the strength and molding efficiency of the tundish dry mix.

[0094] Specifically, in the step S6, the cooling rate of the cooling process is determined based on the baking control parameters.

[0095] It should be noted that those skilled in the art know that any equipment and method capable of cooling the candidate raw materials after baking in the prior art fall within the protection scope of the present invention and will not be elaborated here.

[0096] It is understandable that the cooling rate can be set to 1 / 3 to 1 / 5 of the heating rate.

[0097] The present invention determines the cooling rate of the cooling process based on the baking control parameters, which can avoid cracks caused by too rapid temperature changes, reduce thermal expansion and contraction caused by temperature changes, thereby improving the strength of the tundish dry mix and extending its service life.

[0098] The present invention can remove moisture by drying the candidate raw materials after crushing, grinding and mixing, avoiding the expansion and cracking of the tundish dry mix, thereby improving the strength and molding efficiency of the tundish dry mix after molding. Determining the vibration parameters based on the particle size distribution after drying can not only rearrange the particles in the dry mix to form a dense and uniform whole, thereby improving the strength of the tundish dry mix, but also improve the vibration and molding efficiency. Judging whether the density of the candidate raw materials after vibration meets the preset standard can further ensure the uniformity and tightness of the tundish dry mix. Determining the baking control parameters of the baking process based on the bulk density and apparent porosity after vibration can flexibly control the baking process according to the parameters after vibration, thereby improving the strength and molding efficiency of the tundish dry mix and extending the service life of the tundish dry mix.

[0099] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A high-performance continuous casting tundish dry material forming method, characterized in that: include: Step S1, crushing and grinding the raw materials, and stirring and mixing them according to the formula ratio to obtain candidate raw materials; Step S2, drying the candidate raw material and obtaining the particle size distribution of the candidate raw material after drying; Step S3, determining vibration parameters during the vibration process according to the particle size distribution, and performing vibration treatment on the dried candidate raw material based on the vibration parameters; the vibration parameters include vibration time and vibration frequency; Step S4, obtaining the volume density and apparent porosity of the candidate raw material after vibration, and determining whether the density of the candidate raw material after vibration meets a preset standard according to the volume density and apparent porosity; Step S5, if the density of the candidate raw material after vibration meets the preset standard, determining the baking control parameters of the baking process based on the bulk density and the apparent porosity; the baking control parameters include heating rate, baking temperature and baking time; Step S6, baking the candidate raw material based on the determined baking control parameters, and cooling the candidate raw material after baking to obtain a formed tundish dry material.

2. The high-performance continuous casting tundish dry material forming method according to claim 1, characterized in that: In step S3, determining the vibration parameters during the vibration process includes: Step S31, determining a particle size characteristic value according to the particle size distribution; Step S32, comparing the particle size characteristic value with a preset particle size value, and determining the vibration parameters during the vibration process based on the comparison result.

3. The high performance continuous casting tundish dry material forming method according to claim 2, characterized in that: In the step S32, the vibration parameters in the vibration process are determined, which further includes: If the particle size characteristic value is greater than the preset particle size value, increasing the preset vibration parameter to obtain each vibration parameter in the vibration process; If the particle size characteristic value is less than or equal to the preset particle size value, the preset vibration parameter is reduced to obtain each vibration parameter in the vibration process; wherein the preset vibration parameter is the vibration parameter in the vibration process corresponding to the preset particle size value.

4. The high performance continuous casting tundish dry material forming method according to claim 3, characterized in that: In the step S32, the increase / decrease amplitude of the preset vibration parameter is determined according to the difference between the particle size characteristic value and the preset particle size value.

5. The high performance continuous casting tundish dry material forming method according to claim 4, characterized in that: In step S4, if the volume density is greater than the preset volume density and the apparent porosity is less than the preset apparent porosity, the density of the candidate raw material after vibration meets the preset standard; otherwise, the density of the candidate raw material after vibration does not meet the preset standard.

6. The high-performance continuous casting tundish dry material forming method according to claim 5, characterized in that: In the step S4, it also includes: Step S41, if the density of the candidate raw material after vibration does not meet the preset standard, repeat step S3 to perform vibration treatment.

7. The high performance continuous casting tundish dry material forming method according to claim 6, characterized in that: In the step S5, determining baking control parameters of the baking process based on the bulk density and the apparent porosity includes: The volume density and the apparent porosity are input into a target neural network model to obtain baking control parameters output by the target neural network model.

8. The high performance continuous casting tundish dry material forming method according to claim 6, characterized in that: In the step S5, determining baking control parameters of the baking process based on the bulk density and the apparent porosity includes: Step S51, determining a parameter adjustment ratio based on the volume density and the apparent porosity; Step S52, determining the baking control parameters of the baking process based on the parameter adjustment ratio and the preset baking control parameters.

9. The high performance continuous casting tundish dry material forming method according to claim 7 or 8, characterized in that: In the step S6, it includes: The demoulding strength of the candidate raw material after baking is detected, and whether the baking is completed is determined based on the demoulding strength.

10. The high performance continuous casting tundish dry material forming method according to claim 9, characterized in that: In the step S6, a cooling rate of the cooling process is determined based on the baking control parameters.

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